MLB Player News

Castillo's next start has been pushed back a day to Friday against the Rangers, Ryan Divish of The Seattle Times reports.

The Mariners have just one off day over the next two weeks and one member of their rotation, Bryan Woo (forearm), who is banged up, so the team will use this as an opportunity to give their regular starters some rest. Emerson Hancock will draw the start Thursday versus the White Sox while everyone else gets bumped back.

Wacha (foot) completed a three-inning simulated game Thursday, Anne Rogers of MLB.com reports.

The Royals will wait and see how Wacha feels Friday following the sim game before deciding on his next steps, but the right-hander will most likely head out on a minor-league rehab assignment if he's not feeling any renewed discomfort in his fractured left foot. If Wacha is cleared to make a rehab start Monday or Tuesday, he could be an option to return from the 15-day injured list and slot back into the Kansas City rotation next weekend.

The Mariners recalled Hancock from Triple-A Tacoma on Thursday.

Hancock will start Thursday against the White Sox, giving the other members of Seattle's rotation some extra rest amidst a stretch of one team day off over the next 14 days. The right-hander has already logged seven starts at the big-league level this season -- the most recent on May 7 -- but has pitched to a 5.24 ERA and 1.31 WHIP while forging a 3-3 record. He's been much more effective at Tacoma, where he's sitting on a 2.17 ERA and 1.07 WHIP over the 29 innings covering his five starts with the Rainiers.

Cardinals manager Oliver Marmol said Matz (back) will make the third start of his rehab assignment Sunday with Double-A Springfield, John Denton of MLB.com reports.

In his most recent outing Tuesday with Springfield, Matz surrendered five unearned runs on three hits and one walk while striking out three over 1.2 innings. After Matz tossed 35 pitches Tuesday, Marmol said that the veteran lefty is in line to throw approximately 50 pitches Sunday. The Cardinals are aiming for Matz to build up to the 75-to-80-pitch mark before he returns from the 15-day injured list, so he'll presumably need at least one more rehab start after Sunday to get fully stretched out.

Kremer (triceps) threw a bullpen session Thursday without issues and could begin a minor-league rehab assignment this weekend, Sam Cohn of The Baltimore Sun reports.

Orioles manager Brandon Hyde said a decision hasn't been made regarding which affiliate Kremer will join and which day he might pitch, but the right-hander is seemingly coming along well in his recovery from a triceps strain in any case. After being placed on the 15-day injured list May 24, Kremer may need only one rehab outing to get stretched back out before he rejoins the Baltimore rotation.

Waldrep will make his next start Sunday against the Rays in Atlanta, Justin Toscano of The Atlanta Journal-Constitution reports.

Atlanta had held off from listing Waldrep among its probable pitchers following his MLB debut this past weekend against the Nationals, but the fact that the rookie wasn't immediately demoted following his first start always suggested that he was sticking around in the big-league rotation. Waldrep was touched up for seven runs while striking out only one over 3.2 innings against the Nationals, but he had cruised through the first three frames before unraveling in the fourth. Though Waldrep displayed plenty of upside during stops with Double-A Mississippi and Triple-A Gwinnett earlier this season, he'll still carry plenty of risk as a fantasy option Sunday, even in a favorable matchup at home.

The Royals optioned Lynch to Triple-A Omaha on Thursday.

The move comes one day after Lynch allowed six runs over 6.2 innings in bulk relief in a loss to the Yankees. Kansas City's decision to send Lynch back to the minors could indicate that the club expects Michael Wacha (foot) to be ready to return from the 15-day injured list next week, but no announcement on a replacement for Lynch in the rotation has been made just yet.

Irvin (5-5) picked up the win Wednesday, allowing one run on six hits and a walk over six innings in a 7-5 victory over the Tigers. He struck out five.

The right-hander continues his breakout campaign, winning his third straight trip to the mound while delivering his fifth consecutive quality start. Irvin boasts a 3.00 ERA, 1.04 WHIP and 69:15 K:BB through 81 innings on the season, and he'll look to keep rolling in his next outing, which lines up to come at home early next week against the Diamondbacks.

Povich came away with a no-decision in Wednesday's 4-2 win over Atlanta, allowing five hits over six scoreless innings. He struck out six without walking a batter.

The southpaw was brilliant in his second big-league start, firing 63 of 89 pitches for strikes and leaving the mound in line for his first career win before Matt Olson tied the game at 2-2 in the eighth inning. Despite this performance, Povich may be headed back to the minors if Dean Kremer (triceps) is cleared to rejoin the rotation next week, but if the O's want to keep the youngster around, Albert Suarez could also shift back to the bullpen.

Schwellenbach came away with a no-decision in Wednesday's 4-2 loss to the Orioles, giving up two runs on four hits and two walks over six innings. He struck out three.

Matched up against fellow rookie hurler Cade Povich, Schwellenbach produced his first quality start in three trips to the mound for Atlanta, but the 24-year-old right-hander was on the hook for a loss until Matt Olson went deep in the top of the eighth inning. Schwellenbach may have earned himself a longer stay in the majors with Wednesday's performance, but he'll take a 6.32 ERA, 1.34 WHIP and 12:5 K:BB through 15.2 big-league innings into his next outing, which is scheduled to come at home early next week against the Tigers.